100% in-browser · no signup · nothing uploaded

Config File Generators
for Developers

A free hub of the config files every project needs — a .gitignore generator, a Dockerfile generator, and an .htaccess generator. Pick your stack, toggle options, copy the result. Everything runs client-side on Cloudflare's global edge.

📁 550+ gitignore templates
🐋 8 Docker stacks
15+ htaccess rules
💰 100% free
gitignore generator
📁

.gitignore Generator

Pick languages, frameworks, editors and OS — instantly build a combined .gitignore from 550+ official GitHub templates. De-duplicated and section-labelled.

Open generator →
dockerfile generator
🐋

Dockerfile Generator

Generate a production-ready, multi-stage Dockerfile for Node, Python, Go, Rust, Java, PHP, .NET or static sites — small image, layer caching, non-root user.

Open generator →
htaccess generator

.htaccess Generator

Toggle Apache rules: force HTTPS, www/non-www redirects, gzip compression, browser caching, security headers, hotlink protection and custom error pages.

Open generator →

Stop copy-pasting config files from old projects

Every new repository starts with the same chores: write a .gitignore so build artifacts and secrets stay out of Git, write a Dockerfile so the app builds into a clean container, and — if you're on Apache — write an .htaccess for HTTPS, redirects, compression and caching. Getting each one right from memory is error-prone. These three free generators do it for you, correctly, in seconds, and entirely in your browser.

1. The .gitignore generator

Select any combination of languages (Node, Python, Go, Rust, Java, PHP and more), frameworks (React, Next.js, Django, Laravel, Flutter…), editors (VS Code, JetBrains, Vim) and operating systems. The .gitignore generator merges the matching official GitHub templates into one file, removes duplicate rules, and labels each section — ready to drop into your repo root.

2. The Dockerfile generator

Pick your runtime and version, set the port, and the Dockerfile generator writes an optimized, multi-stage Dockerfile: a builder stage compiles your app and a minimal final stage ships only the artifact, with smart layer caching and a non-root user baked in. A matching .dockerignore is included.

3. The .htaccess generator

Toggle the rules you need and the .htaccess generator produces a clean, commented Apache config: force HTTPS, redirect www/non-www, enable gzip and browser caching, add security headers, block hotlinking, and set custom error pages. Built live, with your domain filled in.

Why client-side?

Because config files often reference internal details — your domain, your stack, your structure — none of that should be sent to a third-party server just to generate a text file. All three tools run 100% in your browser using bundled data and JavaScript. There's no signup, no tracking of your inputs, and they keep working even offline once the page has loaded. They're hosted on Cloudflare's global edge for instant load anywhere.

More free developer tools from hjLabs.in

This hub is part of a family of free, privacy-first developer utilities: fmt.hjlabs.in (JSON formatter, JWT decoder, Base64, regex tester and 11 more), calc.hjlabs.in (developer calculators — color, unit, hash, number-base), time.hjlabs.in (timestamp, timezone & cron expression tools), og.hjlabs.in (favicon & Open Graph image generator), pixel.hjlabs.in (image-to-C++ for Arduino/ESP32), and enhance.hjlabs.in (AI image enhancer). For marketing teams there are SEO tools, a Schema.org generator and AI web tools. Building for the Indian market? compliance.hjlabs.in generates a DPDPA-compliant privacy policy free.

Frequently Asked Questions

What is devtools.hjlabs.in? +
A free hub of config-file generators: a .gitignore generator, a Dockerfile generator and a .htaccess generator. Each runs 100% in your browser and produces a clean, copy-ready file.
Are these tools free? +
Yes — completely free, no signup, no watermarks, no limits. They run entirely client-side.
Do the generators upload my data? +
No. All generation happens in your browser with bundled templates. Nothing you type or select is sent to any server.